4
AssignmentMultiple Choice

Tissue

Question 4 • 2026-2027 EDGE Human Anatomy and Physiology A

Which of the following examples demonstrates a positive feedback mechanism?

Answer
A
A signal in one part of the body causes an accelerated effect in another part
B
Levels of waste products in the blood are lowered when they get too high.
C
The temperature of the blood is maintained at a set point of 98.6ºF.

Explanation

Positive feedback amplifies or accelerates an initial change rather than reversing it. A signal that causes an accelerated effect in another part of the body describes this amplification. Lowering waste levels and maintaining a stable temperature are examples of negative feedback, which helps restore or maintain balance.

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